FAS and esophageal cancer: In our study, no significant association was found between polymorphisms Fas‐670A/G, Fas‐1377G/A, and FasL‐844T/C and susceptibility to esophageal cancer in Henan Anyang (P > 0.05), suggesting that these polymorphisms might not play an important role in the progression and development of esophageal cancer in this particular population.